Hellfire Saga

By Hardline Team

Ever stumble upon locations which evoke such feelings of gloom and creepiness as to create an unforgettable impression? Can you hear the roar of various and numerous monsters? Do you feel the heat under your feet?

Hardline Team is proud to present you a new chapter of the blue hedgehog's adventures in an outlandish setting - Hellfire Saga!


Sonic finds his realm transformed, merging with the demon realm to form a nightmarish scape littered with legions of hungry-for-blood demons. Help Sonic to escape from hell and return to his home world!

In the new demo version of this project, Sonic runs through not only zones which have been updated from the previous version, but also the capital of hell, dominated by Death itself - Sin City, a zone containing new enemies, layouts and mechanics!


  • Infernal levels of hurricane action, chaos, and bloodshed!
  • A new HP system!
  • New custom powerup - the skull! It can be found in secret areas and makes you invulnerable...in unique way. In addition, there are the returning elemental shields.
  • New bosses and enemies, paying homage to games such as Castlevania and Ghosts 'n Goblins!
  • Sound test and difficulty options (including Assist Mode)!
  • Rocking soundtrack comprised of covers of some of the best tracks from Castlevania and many other games!
  • And lots more...

Contents of the demo:

  • FDZ: Act 1, Act 2, Act 3, Boss
  • SCZ: Act 1, Act 2
  • MGZ: Act 1, Act 2


  • We designed this game with a certain difficulty level in mind. If possible, we recommend playing the game on that mode. However, we recognize that not everyone enjoys the kind of harder experience Hellfire Saga aims to be or has time to invest into mastering boss patterns. And that's fine! That's why we created Assist Mode, which allows for a more comfortable time and can be toggled in the options menu.
  • Some bosses explode with screen flashes. If that's an issue for you, they can be turned off in the options menu.

General credits:

  • Narcologer - Project lead, programming, main game and story concept, some boss and enemy sprites, custom powerup
  • TheBlad768 - Main programming, creating the HAGE engine, some boss and enemy sprites, cutscenes, blood, weather effects, SEGA and title screen implementation, sound driver modification.
  • FoxConED - Hardline team leader, music creation, programming, sound driver modification.
  • mrcat-pixel - Art direction, level design, tileset and background art, sprite art, writing help.
  • VladislavSavvateev - Programming, HardLine screen implementation, sound driver modification, tool programming.
  • AURORA☆FIELDS - AMPS sound driver, programming, moving lava and parallax engine implementation.
  • Gerry Trevino - Composing the main theme.
  • GENATAR_i - Music creation.
  • Ralakimus - Programming, HUD implementation.
  • Hotmilk - Writing.
  • VAdaPEGA - Sprite art.
  • Trickster - Sprite art.
  • Sergey ESN - Sprite art.
  • Nat the Porcupine - Sprite art.
  • Sosocheck69 - Concept artist.
  • ProjectFM - One of the bosses and its sprite art.
  • cuberoot - Programming development tools.
  • N-BAH - Programming development tools.
  • SHooTeR - General help, programming development tools.
  • Solareyn Eylinor - Directing cutscene animation.
  • malamus - Testing and feedback.
  • Vladikcomper - Programming, improved Kosinski, Nemesis alghorithms, Advanced Error Handler.
  • Flamewing - Ultra DMA Queue, improved Kosinski Module alghorithm.

Featuring enemies and bosses from:

  • Castlevania (Bloodlines, Rondo of Blood, Dracula X, Symphony of Night, Super ~ 4, Java);
  • Ghosts n Goblins (ARCADE), Ghouls n Ghosts, Super Ghouls n Ghosts;
  • Kid Chameleon;
  • The Legend of Zelda: A Link to the Past;
  • Splatterhouse 2;
  • Demon's Crest;
  • Sparkster: Rocket Knight Adventures 2;
  • Castle of Illusion Starring Mickey Mouse;
  • GS Mikami,

which have been edited by sprite artists to fit the game's artstyle where time permitted; additionally, featuring character sprites from:

  • Shinbaloonba - Sonic;
  • Gabriel_aka_Frag - Rouge;
  • Skylights - Tikal;
  • teamhedgehog - Honey;
  • EchidKnux - Death,

also edited where possible. (Please excuse the messy placeholders, we're working on it!)

Featuring music from:

  • Actraiser;
  • Rusty;
  • Castlevania (Super ~ 4, Portrait of Ruin, Symphony of the Night, Aria Of Sorrow)
  • Elemental Master;
  • Ultimate Mortal Kombat 3;
  • Dragon's Fury;
  • Gerry Trevino;
  • Periphery,

covered by our musicians.


File Type: rom/mega-drive

File Size: 1.19 MB

Ivanpascua16 @ 2021-10-11 05:40:20

I Love this hack!!!

IWantToDie @ 2021-10-18 02:17:00


drmelon @ 2021-10-11 11:40:17

Incredibly impressive - really good visuals, really good level layouts, lovely Sonic sprites, and an excellent game to play for Halloween! Very technically impressive, too!

Donovan_Aesland12 @ 2021-10-11 11:53:00

this is incredible!! the visuals, music, bosses, its great, it doesnt even feel like a hack, if i saw this without knowing it was a hack i would think it was a fan game lol

Giovanni @ 2021-10-11 12:52:42

This ROM hack never fails to mesmerize me. It has evolved into such an ambitious project through the years. I really love the new bosses, difficult but not exaggerately challenging, and I absolutely adore Sin City's new design. This definitely feels like its own game, and I will congratulate myself with Hardline Team for constantly bringing quality projects to light.

dilworks @ 2021-10-11 13:02:51

I'm not fan of this kind of stores, but hey, I can't deny that this hack kicks some serious ass.

The visuals and music are well polished, and the difficulty isn't THAT bad if you aren't a button masher when facing DAT BOSSES (in other words: don't be me plz)

This hack surely has evovled quite nicely since its first SHC presentation. You won't get bored, that's for sure.

TheFieldWarrior @ 2021-10-12 06:38:59

This hack just keeps getting better and better. You guys are doing a great job and I'm looking forward to the final version

RedRistarchase @ 2021-10-12 19:38:52

Hi! im just make this account to ask: is this a rom hack or a fan game lol

VAdaPEGA @ 2021-10-13 09:47:30

Sir, this is a hacking contest, not a fangame contest.

JoenickROS @ 2021-10-12 23:20:34

Are you guys going to put together a sound track once the hack is completed?

FoxConED @ 2021-10-13 01:11:37

Yes, we planned to release all soundtrack to streaming platforms like Spotify, SoundCloud, etc.

JoenickROS @ 2021-10-13 16:44:28

Good because I had to make one for S-Factor once and it was hell lol

Jdpense @ 2021-10-13 18:23:29

Clearly, the best hack here! ^^

JoenickROS @ 2021-10-13 20:38:36

I thought you were giving everything a null vote :p

XtremerSadiq @ 2021-10-13 19:30:33

This hack was so sick to play. Its clear you took a lot of time overhauling what was already a fun time and implementing even better visuals and gameplay quirks. This one definitely has my vote and I know it'll go on to win more!

SuperBupDX @ 2021-10-14 21:13:48

are there any plans to add peelout or drop dash, or just base moveset?

JoenickROS @ 2021-10-17 07:44:58

Im probably one of the few that recognized what was playing in Sin City act 2. Periphery is an amazing band and the fm patchs you used fit the original feel of the song. Great job who ever covered it.

Last modified by JoenickROS @ 2021-10-17 07:46:21

IAMTACO420 @ 2021-10-26 04:45:59

I am a huge fan of this hack. Honestly just keep doing what you do!! Thank you so much for this experience. From the level design to the music everything was super! I couldn't put it down and I have to say the sudden difficulty spike was appropriate.

emanobrine @ 2021-10-28 07:54:31

This hack rom is magnificent

ssg_infinite_sonic @ 2021-10-28 22:52:58

out of all the hacks i streamed this year...this was my favorite! Keep up the good work!

VitalikNerd005 @ 2021-10-30 10:17:21

This is the coolest hack from hell! This is my favorite Sonic hack.

metal_soniclol @ 2021-11-05 08:48:15

good hack hardline team very good but I was waiting for a better update, but I don't really understand hacking, so it's probably very difficult for you and I think it's not bad update?

Last modified by metal_soniclol @ 2021-11-05 08:48:35

EddyTF @ 2021-11-14 00:37:15


Silasthebest @ 2022-02-19 10:29:40

Good but decent for me

Kamire_Comics @ 2022-04-30 03:07:26

bug which was not found in the emulator, if you run the hack through the Chinese console, then after the first level the music freezes forever.

ah, so hack is good